(19)

(11)

EP 1 794 640 A1

(12)

(43) Date of publication: 13.06.2007 Bulletin 2007/24 (21) Application number: 05781237.2 (22) Date of filing: 18.08.2005

(51) International Patent Classification (IPC):  G02B 27/14(2006.01) F21V 7/00(2006.01) H01L 33/00(2006.01) F21V 7/05(2006.01) (86) International application number: PCT/IB2005/052724 (87) International publication number: WO 2006/033032 (30.03.2006 Gazette 2006/13)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 24.09.2004 EP 04104642 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventors: HOELEN, Christoph, G., A. NL-5656 AA Eindhoven (NL) ANSEMS, Johannes, P., M. NL-5656 AA Eindhoven (NL) (74) Representative: van der Veer, Johannis Leendert  Philips Intellectual Property & Standards P.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)